Applicable medium of stainless steel valve

Applicable medium of stainless steel valve

Stainless steel valve is usually used in the working medium with a certain degree of corrosive occasions. Any kind of valve material, the ability to resist the corrosion of working medium is relatively limited, and is affected by many factors. If the processing technology and heat treatment technology used in the manufacturing process are appropriate, the corrosion resistance of this material can be guaranteed. No matter what kind of heat treatment process is used in concentrated nitric acid medium with concentration > 98%, the steel has no corrosion resistance. Therefore, when selecting valve materials according to the properties of working medium, it is necessary to study the influence of medium concentration, temperature and material heat treatment process on corrosion resistance. Stainless steel valve has become a must purchase valve product in various industries, but there are few domestic valve manufacturers that can meet the international standards. Therefore, before purchasing stainless steel valve, customers must ask the manufacturers to provide the production and ex factory certificates of various stainless steel valves, so as to reduce the purchase of unqualified products. Nowadays, stainless steel valves and sanitary valves that meet international standards mainly come from Japan, Germany, the United States, the United Kingdom and Shanghai, the first tier city in China. Stainless steel valve is the control component in the pipeline fluid transmission system, which is used to change the channel section and medium flow direction, and has the functions of diversion, cut-off, regulation, throttling, check, shunt or overflow pressure relief. There are many kinds and specifications of valves used in fluid control, from the simplest stop valve to various valves used in extremely complex automatic control system. The valve can be used to control water, steam, oil, gas, mud and various corrosive media. Valve control can adopt a variety of transmission modes, such as manual, electric, hydraulic, pneumatic, worm gear, electromagnetic, electromagnetic hydraulic, electric hydraulic, pneumatic hydraulic, spur gear, bevel gear drive, etc; Under the action of pressure, temperature or other forms of sensing signals, the valve can act according to the predetermined requirements, or simply open or close without depending on the sensing signal. The valve depends on the driving or automatic mechanism to make the lifting, sliding, swinging or rotary movement of the opening and closing parts, so as to change the size of its flow channel area to realize its control function.